Is That So? is a jazz tune by Duke Pearson, with Benny Harris credited as the composer. The LP Version was released in 1965, with a date listed as January 1, 1965. The original artist performing the piece is Duke Pearson. The exact album name isn’t specified in the provided content, but the LP Version designation indicates it appeared on an LP release. The track sits in the jazz genre and sits within Pearson’s mid-1960s catalog that includes other tunes such as Honeybuns and The Phantom.